Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b901ad75f6a45ab…

MALICIOUS

PDF

76.0 KB Created: 2020-12-20 16:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9f773a37c205e8041067f3a988c18304 SHA-1: 07a575e4b2cd84f9ad3c24c44a25b72382cce411 SHA-256: 9b901ad75f6a45ab5d389d075b27203f01cb55a6e25d9394ba8d4674f14c2535
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially malicious sites. The presence of embedded URLs and the PDF structure indicate it's likely part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffine.ru/strik?utm_term=murrah+high+school+jackson+ms+basketball PDF link annotation
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/1698268.pdfIn PDF document text
    • https://ginadilu.weebly.com/uploads/1/3/4/7/134768391/xumadulibujolenake.pdfIn PDF document text
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/9165264.pdfIn PDF document text
    • https://puzagejezazi.weebly.com/uploads/1/3/4/4/134465952/3411672.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/4671216.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2826c6d8-b16b-4d06-a02d-7b9b55ca60aa/64492615065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/585649bc-11d2-4f8a-950c-3abdf816f586/zasolewerex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75bd1128-366b-4438-bf9f-980319ca229d/totesokujoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/477db17a-32d8-4997-9116-df175c4b0e25/xonelupinuvipimezas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57d1d5687f52b6ba02c69/t/5fc73279a907d7439cd618e4/1606890109447/78147856377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d4f65e-97df-47cb-9591-417cc56fa863/new_movie_about_jesus_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/best_accountant_cv_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71b8dcf7-c628-4d37-8af8-c52efab32c7c/literal_inferential_and_evaluative.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c0851c8c7413144aa908/t/5fc5be1f3485235c868dc039/1606794789053/vawulafiz.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/wexekebimemuninugetawin.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA51 5496 bytes
SHA-256: 162663f381b33b50bef1946ed024f1bdb122921b06fcf52644f25f14ebcd333f
font_01_sfnt_off0000fcf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF0 11096 bytes
SHA-256: 9342c8700df0df57b062f8b066f9eea563ed4cb492ef25c99eea6dab594b4a8b

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